Examkin

Question

Difficulty: Very hardAWS Global Infrastructure

A financial services firm is designing a high-frequency trading platform on AWS. The system must meet two major requirements: it must provide single-digit millisecond latency to an on-premises trading environment in a metropolitan area where no AWS Region exists, and it must replicate transaction logs to a geographically isolated recovery site located more than 250 miles away to satisfy disaster recovery regulations.

Which TWO of the following AWS infrastructure components or deployment models should the firm choose to meet these requirements?

  1. Deploying latency-sensitive application components in an AWS Local Zone located in the metropolitan area.Answer
  2. Replicating transaction logs to an AWS Region located at least 250 miles away from the primary site.Answer
  3. C
    Deploying latency-sensitive application components in an AWS Edge Location using Amazon CloudFront.
  4. D
    Replicating transaction logs to a different Availability Zone within the same primary AWS Region.
  5. E
    Installing AWS Outposts directly at a nearby AWS Edge Location to run the trading applications.

Answer

The firm should deploy the latency-sensitive components in an AWS Local Zone in the metropolitan area and replicate transaction logs to a different AWS Region located at least 250 miles away.
AWS Local Zones extend AWS infrastructure into metropolitan areas, providing the necessary single-digit millisecond latency to on-premises systems without requiring a full Region. To meet the disaster recovery requirement of 250+ miles of separation, replication must cross between distinct AWS Regions, as Availability Zones within a single Region are located in the same geographic area for low-latency clustering.

Step-by-Step Solution

1
Analyze the latency constraint of single-digit milliseconds in a metropolitan area lacking an AWS Region.
Identify that AWS Local Zones are specifically designed to bring select AWS services (like compute and storage) closer to metropolitan centers, providing single-digit millisecond latencies to local systems.
This establishes the best deployment model for the high-frequency trading workloads.
2
Analyze the disaster recovery constraint requiring geographic separation of more than 250 miles.
Determine that replication across separate AWS Regions is required, since multiple Availability Zones within the same Region are clustered in the same general geographic area.
This ensures the regulatory requirement for remote geographic isolation is met.
3
Evaluate the remaining options to ensure they do not meet the criteria.
Confirm that Edge Locations do not run high-performance compute workloads and do not host AWS Outposts, and that single-region Availability Zones do not satisfy the 250-mile distance requirement.
This eliminates incorrect options and verifies the final answer.

Key Concept

AWS Regions vs. Availability Zones vs. Local Zones and Edge Locations
Estimated Time:3m 0s
Rate this question

Topics

AWS Global Infrastructure

More questions from this topic